/* $Id: drv_generic_parport.c,v 1.21 2006/02/25 13:36:33 geronet Exp $ * * generic driver helper for serial and parport access * * Copyright (C) 1999, 2000 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: drv_generic_parport.c,v $ * Revision 1.21 2006/02/25 13:36:33 geronet * updated indent.sh, applied coding style * * Revision 1.20 2005/12/12 05:52:03 reinelt * type of delays is 'unsigned long' * * Revision 1.19 2005/06/19 17:57:06 reinelt * cosmetics... * * Revision 1.18 2005/06/13 03:43:46 reinelt * undo PPEXCL activation... * * Revision 1.17 2005/06/13 03:38:25 reinelt * try PPEXCL again, but ignore result * * Revision 1.16 2005/05/08 04:32:44 reinelt * CodingStyle added and applied * * Revision 1.15 2005/05/05 08:36:12 reinelt * changed SELECT to SLCTIN * * Revision 1.14 2005/05/04 06:13:05 reinelt * parport_wire_status() added * * Revision 1.13 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * * Revision 1.12 2005/01/06 16:54:54 reinelt * M50530 fixes * * Revision 1.11 2004/09/18 15:58:57 reinelt * even more HD44780 cleanups, hardwiring for LCM-162 * * Revision 1.10 2004/09/18 09:48:29 reinelt * HD44780 cleanup and prepararation for I2C backend * LCM-162 submodel framework * * Revision 1.9 2004/09/18 08:22:59 reinelt * drv_generic_parport_status() to read status lines * * Revision 1.8 2004/06/26 12:04:59 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.7 2004/06/26 09:27:21 reinelt * * added '-W' to CFLAGS * changed all C++ comments to C ones * cleaned up a lot of signed/unsigned mistakes * * Revision 1.6 2004/06/20 10:09:55 reinelt * * 'const'ified the whole source * * Revision 1.5 2004/04/12 05:14:42 reinelt * another BIG FAT WARNING on the use of raw ports instead of ppdev * * Revision 1.4 2004/03/03 04:44:16 reinelt * changes (cosmetics?) to the big patch from Martin * hash patch un-applied * * Revision 1.3 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save C

# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 546000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE
T 722000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE

%s: wiring: DISPLAY:%-9s - PARPORT:SLCTIN (Pin 17)", Driver, name); } else if (strcasecmp(signal, "GND") == 0) { wire = 0; info("%s: wiring: DISPLAY:%-9s - PARPORT:GND", Driver, name); } else { error("%s: unknown signal <%s> for control line <%s>", Driver, signal, name); error("%s: should be STROBE, AUTOFD, INIT, SLCTIN or GND", Driver); return 0xff; } return wire; } unsigned char drv_generic_parport_wire_ctrl(const char *name, const char *deflt) { unsigned char wire; char key[256]; char *val; qprintf(key, sizeof(key), "Wire.%s", name); val = cfg_get(Section, key, deflt); wire = drv_generic_parport_signal_ctrl(name, val); free(val); return wire; } unsigned char drv_generic_parport_hardwire_ctrl(const char *name, const char *signal) { unsigned char wire; char key[256]; char *val; qprintf(key, sizeof(key), "Wire.%s", name); val = cfg_get(Section, key, ""); /* maybe warn the user */ if (*val != '\0' && strcasecmp(signal, val) != 0) { error("%s: ignoring configured signal <%s> for control line <%s>", Driver, val, name); } free(val); wire = drv_generic_parport_signal_ctrl(name, signal); return wire; } static unsigned char drv_generic_parport_signal_status(const char *name, const char *signal) { unsigned char wire; if (strcasecmp(signal, "ERROR") == 0) { wire = PARPORT_STATUS_ERROR; info("%s: wiring: DISPLAY:%-9s - PARPORT:ERROR (Pin 15)", Driver, name); } else if (strcasecmp(signal, "SELECT") == 0) { wire = PARPORT_STATUS_SELECT; info("%s: wiring: DISPLAY:%-9s - PARPORT:SELECT (Pin 13)", Driver, name); } else if (strcasecmp(signal, "PAPEROUT") == 0) { wire = PARPORT_STATUS_PAPEROUT; info("%s: wiring: DISPLAY:%-9s - PARPORT:PAPEROUT (Pin 12)", Driver, name); } else if (strcasecmp(signal, "ACK") == 0) { wire = PARPORT_STATUS_ACK; info("%s: wiring: DISPLAY:%-9s - PARPORT:ACK (Pin 10)", Driver, name); } else if (strcasecmp(signal, "BUSY") == 0) { wire = PARPORT_STATUS_BUSY; info("%s: wiring: DISPLAY:%-9s - PARPORT:BUSY (Pin 11)", Driver, name); } else if (strcasecmp(signal, "GND") == 0) { wire = 0; info("%s: wiring: DISPLAY:%-9s - PARPORT:GND", Driver, name); } else { error("%s: unknown signal <%s> for status line <%s>", Driver, signal, name); error("%s: should be ERROR, SELECT, PAPEROUT, ACK, BUSY or GND", Driver); return 0xff; } return wire; } unsigned char drv_generic_parport_wire_status(const char *name, const char *deflt) { unsigned char wire; char key[256]; char *val; qprintf(key, sizeof(key), "Wire.%s", name); val = cfg_get(Section, key, deflt); wire = drv_generic_parport_signal_status(name, val); free(val); return wire; } unsigned char drv_generic_parport_wire_data(const char *name, const char *deflt) { unsigned char w; char wire[256]; char *s; qprintf(wire, sizeof(wire), "Wire.%s", name); s = cfg_get(Section, wire, deflt); if (strlen(s) == 3 && strncasecmp(s, "DB", 2) == 0 && s[2] >= '0' && s[2] <= '7') { w = s[2] - '0'; } else if (strcasecmp(s, "GND") == 0) { w = 0; } else { error("%s: unknown signal <%s> for data line <%s>", Driver, s, name); error("%s: should be DB0..7 or GND", Driver); return 0xff; } free(s); if (w == 0) { info("%s: wiring: DISPLAY:%-9s - PARPORT:GND", Driver, name); } else { info("%s: wiring: DISPLAY:%-9s - PARPORT:DB%d (Pin %2d)", Driver, name, w, w + 2); } w = 1 << w; return w; } void drv_generic_parport_direction(const int direction) { #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPDATADIR, &direction); } else #endif { /* code stolen from linux/parport_pc.h */ ctr = (ctr & ~0x20) ^ (direction ? 0x20 : 0x00); outb(ctr, Port + 2); } } unsigned char drv_generic_parport_status(void) { unsigned char mask = PARPORT_STATUS_ERROR | PARPORT_STATUS_SELECT | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_ACK | PARPORT_STATUS_BUSY; unsigned char data; #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPRSTATUS, &data); } else #endif { data = inb(Port + 1); } /* clear unused bits */ data &= mask; return data; } void drv_generic_parport_control(const unsigned char mask, const unsigned char value) { unsigned char val; /* any signal affected? */ /* Note: this may happen in case a signal is hardwired to GND */ if (mask == 0) return; /* Strobe, Select and AutoFeed are inverted! */ val = mask & (value ^ (PARPORT_CONTROL_STROBE | PARPORT_CONTROL_SELECT | PARPORT_CONTROL_AUTOFD)); #ifdef WITH_PPDEV if (PPdev) { struct ppdev_frob_struct frob; frob.mask = mask; frob.val = val; ioctl(PPfd, PPFCONTROL, &frob); } else #endif { /* code stolen from linux/parport_pc.h */ ctr = (ctr & ~mask) ^ val; outb(ctr, Port + 2); } } void drv_generic_parport_toggle(const unsigned char bits, const int level, const unsigned long delay) { unsigned char value1, value2; /* any signal affected? */ /* Note: this may happen in case a signal is hardwired to GND */ if (bits == 0) return; /* prepare value */ value1 = level ? bits : 0; value2 = level ? 0 : bits; /* Strobe, Select and AutoFeed are inverted! */ value1 = bits & (value1 ^ (PARPORT_CONTROL_STROBE | PARPORT_CONTROL_SELECT | PARPORT_CONTROL_AUTOFD)); value2 = bits & (value2 ^ (PARPORT_CONTROL_STROBE | PARPORT_CONTROL_SELECT | PARPORT_CONTROL_AUTOFD)); #ifdef WITH_PPDEV if (PPdev) { struct ppdev_frob_struct frob; frob.mask = bits; /* rise */ frob.val = value1; ioctl(PPfd, PPFCONTROL, &frob); /* pulse width */ ndelay(delay); /* lower */ frob.val = value2; ioctl(PPfd, PPFCONTROL, &frob); } else #endif { /* rise */ ctr = (ctr & ~bits) ^ value1; outb(ctr, Port + 2); /* pulse width */ ndelay(delay); /* lower */ ctr = (ctr & ~bits) ^ value2; outb(ctr, Port + 2); } } void drv_generic_parport_data(const unsigned char data) { #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPWDATA, &data); } else #endif { outb(data, Port); } } unsigned char drv_generic_parport_read(void) { unsigned char data; #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPRDATA, &data); } else #endif { data = inb(Port); } return data; } void drv_generic_parport_debug(void) { unsigned char control; #ifdef WITH_PPDEV if (PPdev) { ioctl(PPfd, PPRCONTROL, &control); } else #endif { control = ctr; } debug("%cSTROBE %cAUTOFD %cINIT %cSLCTIN", control & PARPORT_CONTROL_STROBE ? '-' : '+', control & PARPORT_CONTROL_AUTOFD ? '-' : '+', control & PARPORT_CONTROL_INIT ? '+' : '-', control & PARPORT_CONTROL_SELECT ? '-' : '+'); }